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物探与化探  2002, Vol. 26 Issue (3): 218-224    
  论文 本期目录 | 过刊浏览 | 高级检索 |
井间地震层析成像分辨率研究
裴正林1, 余钦范2, 狄帮让1
1. 石油大学中国石油然气总公司物探重点试验室, 北京 100083;
2. 中国地质大学, 北京 100083
RESOLUTION IN CROSSHOLE SEISMIC TOMOGRAPHY
PEI Zheng-lin1, YU Qin-fan2, DI Bang-rang1
1. University of Petroleum, Key Lab of Geophysical Exploration CNPC, Beijing 100083, China;
2. University of Geosciences, Beijing 100083, China
全文: PDF(460 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 

通过大量数值模型试验,并根据射线密度、射线正交性和点扩散函数,对井间地震层析成像的分辨率问题进行了研究。结果表明,井间地震层析成像的分辨率在空间上是可能性变的,垂直方向的分辨率好于水平方向,而且高速异常体和低速异常体的图像形态和分辨率是非一致的。高速异常体波形CT的图像水平方向最小分辨率距离为1/2波长,垂直分辨率最小分辨率距离为3/10波长;而低速异常体的波形CT图像的水平方向的最小分辨率约为2/5波长,垂向最小分辨率约1/5个波长;走时CT的图像水平方向最小分辨率为3个像元,垂直方向的最小分辨率距离为2个像元;当井深与井间距之比为2时,图像分辨率最高。

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关键词 匹配追踪瞬时频率负异常瞬时相位连续相位    
Abstract

Resolution in crosshole seismic tomography has been studied in this paper by means of ray density, ray orthogonality and point-spread function. Numerical experiments indicate that the resolution is better in the vertical direction than in the horizontal, and the high velocity anomalous body is different from the low velocity anomalous body in resolution and shapes of tomography. For the high velocity anomalous body, the spatial resolution of the waveform velocity tomogram in horizontal is about 1/2 of the wavelength, and that in vertical about 3/10 of the wavelength. For the low velocity anomalous body, the spatial resolution of the waveform velocity tomogram in horizontal is about 2/5 of the wavelength, and that in vertical about 1/5 of the wavelength. The spatial resolution of the traveltime velocity tomogram in horizontal is about three tomographic elements width, and that in horizontal about two tomographic elements width. When the ratio between the borehole depth and well offset is equal to 2.0, the spatial resolution of the velocity tomogram is the best.

Key wordsmatching pursuit    instantaneous frequency    negative anomaly    instantaneous phase    continuous phase
收稿日期: 2001-05-11      出版日期: 2002-06-24
: 

P631.4

 
  P631.8

 
作者简介: 裴正林(1962-),男,高级工程师,2000年获中国地质大学(北京)地球探测与信息技术专业博士.发表论文30余篇,曾分别主研和负责完成"八五"、"九五"国家科技攻关三级项目二项,获部级科技三等奖二项.现在石油大学(北京)从事博士后研究工作,主要研究方向:小波变换、遗传算法及神经网络应用,层析成像理论方法和地震叠前深度偏移等方面研究.
引用本文:   
裴正林, 余钦范, 狄帮让. 井间地震层析成像分辨率研究[J]. 物探与化探, 2002, 26(3): 218-224.
PEI Zheng-lin, YU Qin-fan, DI Bang-rang . RESOLUTION IN CROSSHOLE SEISMIC TOMOGRAPHY. Geophysical and Geochemical Exploration, 2002, 26(3): 218-224.
链接本文:  
https://www.wutanyuhuatan.com/CN/      或      https://www.wutanyuhuatan.com/CN/Y2002/V26/I3/218

[1] 曹俊兴,严忠琼. 地震波跨孔旅行时层析成像分辨率的估计[J].成都理工学院学报,1995,22(4).
[2] 陈国金. 井间观测系统的讨论[J].石油物探,1996,35(3).
[3] 杨文采,杜剑渊. 煤矿陷落柱地震层析成像试验[J].物探与化探,1992,16(3).
[4] 赵永贵,王超凡,陈燕民,等. 地震CT在寻找隐伏铜镍矿中的应用[J].地球物理学报,1996,39(2).
[5] Backus G,Gilbert F. The resolving power of gross earth data[J].Geophys. J. R. Astr. Soc.,1968,16(1):169-205.
[6] Humphreys J T,Clayton R W.Adaption of back projection tomo-graphy to seismic traveltime problems[J].J.G.R.,1988,93:1073-1085.
[7] Rector III J W,Washbourne J K. Characterization of resolutionand uniqueness in crosswell direct-arrival traveltime tomographyusing the Fourier Projection slice theorem[J].Geophysics,1994,59(11):1642-1649.
[8] Schuster G T.Resolution limits for crosswell migration and tra-veltime tomography Geophys[J].J.Int.,1996,127(2):427-440.
[9] Williamson P R,Worthington M N. A guide to the limits of re-solution imposed by scattering in ray tomography[J].Geophy-sics,1991,56(2):202-207.
[10] Williamson P R,Worthington M H. Resolution limits in raytomography due to wave behavior: Numerical experiments[J].Geophysics,1993,58(5):727-735.
[11] 冯锐.西北地区的基地速度图像[J].地球物理学报,1991,34(4).
[12] Wu R S, Toksoz M N. Diffraction tomography and multisourceholography applied to seismic imaging[J].Geophysics,1987,52(1):11-25.

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